No. of Recommendations: 2
Rubio's an especially likely choice, because being able to leave is his main advantage over Vance in running for the nomination. Vance is stuck to the end, but Rubio can resign and start to separate himself a little more than Vance can
Vance isn't stuck. He could resign if he chooses, and put 1000 miles between Trump and himself. But does he have the courage? Does he have the confidence that he can make it on his own? It's also a high stakes gamble for him, because if he stays Trump might die or be removed by the 25th amdmt, and Vance would get the presidency on a silver platter.